The stunning actress will reprise her role as Black Widow for the third instalment of the superhero movie, alongside Don Cheadle and Gwyneth Paltrow.

Feature Film Casting have put out a new message, revealing new details about the film as well as confirmation Scarlett will return.

The call-out added: ''The storyline is being described by writer-director Shane Black as being a Tom Clancy-thriller with Iron Man fighting Real World villains.

''The studio wasn't happy with the result of 'Iron Man 2'. That pretty much came about due to a rushed production schedule in an attempt to hit a release date rather than simply make a good film, but I digress. 'Iron Man 3' will not be another, 'two men in iron suits fighting each other.'''

In 'Iron Man 2', Black Widow only had a bit part but her role will be much bigger in the next film, which is due out next May.